Heel-turning machine



J. H. VINTON HEEL TURNING MACHINE April 13, 1926.

3 Sheets-Sheet 1 Original Filed March 27. 1920 April 13 1926. 1,580,184

J. H. VINTON HEEL TURNING MACHINE Original Filed March 27. 1920 3SheetsShe et 2 Ira/amnion" I I we- 7. m

A ril 13 1926. 1,580,184

, J. H. VINTON HEEL TURNING MACHINE Original Filed March 27. 1920 3Sheets-Sheet 3 fiirue7i/tbr/ Patented Apr. 13, 1926.

UNITED STATES PATENT OFFICE.

worm H. vmron, or xnnnn, nnwnamrsnmn', assronon, BY mnsnn assrenmanrs,

TO UNITED SHOE MACHINERY CORPORATION, OF PATERSON, NEW JERSEY, A. OOR-IPORATION OF NEW JERSEY.

HEEL-momma uacnmn.

Application filed March 27, 1920, Serial No. 888,487. Renewed February7, 1924.

/ T all whom it may concern:

Be it known that I, JOHN H. VIN'roN, a citizen of the United States,residin at Keene, in the county of Cheshire and tate of New Hampshire,have invented new and useful Improvements in Heel-Turning Machines, ofwhich the following is a speci-'.

fication.

This invention relates to wood heel turning machines.

An important object of the invention is to provide a simple, economical,strong, effective and convenient jack especially adapted for wood heelturning machines, although in various aspects the invention is notlimited to such use. With this object in view the invention provides animproved jack of the type disclosed in United States Letters Patent No.1,397,844, granted Nov. 22, 1921, on my application; Accordingly, aprincipal feature of the invention consists in a machine having asupport for a wood heel blank, a primary clamping member arranged tocooperate with the support to hold the blank, a secondary clampingmember engaging the primary member to force it against the blank, and acam lever for engaging the secondary member to force it against theprimary member. I thus secure a strong and efficient clamping mechanismwhich is positive in operation and has a minimum number of parts.

This and other features of the invention, comprising certaincombinations and arrangements of parts, will be understood from thefollowing description of a preferred embodiment thereof selected forpurposes of illustration and shown 'in the accompanying drawings inwhich,-

Figure 1 is a side elevation partly in section of my improved blankholder showing the same positioned upon a portion of a heel turningmachine.

Fig. 2 is a detail sectional elevation taken r on the line 2-2, Figure1.

Fig. 8 is a detail end elevation of-the bearing for one of the cam rollsof the blank holder.

F ig. 4 is a detail plan section taken on the line 4-4, Figure 1.

Fig. 5 is a plan view of my improved blank holder showing the same. in.connection with a portion of a heel turning ma- Y chine.

.Fig. 6 is ort. p Fig. 77, Fig. 6. I

-Fig. 8 is an clamping jaw. Fig. 9 is a 9-9, Fig. 8.

7 is a detail section taken on line 5 plan viewof the blank supunderneath plan of detail section taken on line Figs. 10 and inclusiveare dia ammatic plan views illustrating the di erent positions which areassumed by the blank relatively to the holder and its former rotarycutters.

Like numerals refer to like parts throughout the several views of thedrawings.

In .the drawings, 15 is the frame of the heel turning machine, 16- and17 are the cutters which are fast to vertical rotary, shafts 18 and 19respectively, said shafts being rotatably mounted in bearings on theframe of the machine. 20 is a vertical shaft upon which is mounted anarm 21 to rotate with respect to the frame 15., The arm 21 is rovidedwith bearings 22 and 23' in which 1S slidably androtatably' mounted ashaft 24., The shaft 24 has a collar 25 fastened thereto and betweenthis collar and the lower end of the bearing 22 said shaft 24isencircled by a spring 26, a tendency of said spring being to hold theshaft 24 downwardly. To the lower end of the shaft 24 is fastened an arm27 and journaled to said arm is a long roll 28 which is adapted, whenthe jack is being swung to cut a heel as will be described, to engagea'cam track 29 which is pivotally mounted at 29' on the frame of themachine. When the machine is not actually cutting a heel, the arm 21 ispulled out to its-central position as shown in Fig. 5 when the said camtrack will engage a fiat surface 30 upon the underside of said arm 27. a

The upper end of the shaft 24 has a former 31 fastened thereto iwhich'inthe op- 1 guides .32 and 33, "as hereinafter descri d,

eration of the machine is adapted to en age A frame-holder 34 is alsofastened to the upper end of the shaft 24 and is slotted at 35 toreceive a ortion of a frame 36 which rojects into said slot and ispivoted to the rame-holder 34 at 37. A screw 38 projects through theframe-holder 34 and through the slot 35 and also projects through a slot39 provided in the frame 36 and has screwthreaded engagement with theframe-holder 34 on one side of said slot 35 so that by tightening up thescrew- 38 any wear which may take place between the frame 36 and theopposite sides of the slot 35 in the holder 34 will be taken up so thatthe frame 36 may always have a suitably snug fit in the slot 35.

A wooden heel blank 42 rests upon a support 43 which is fastened to andforms in effect a portion of the frame 36. The support 43 is providedwith grooves 40 which extend transversely thereof forming teeth 41 andthese teeth have their rear faces 40 {substantially at right an les tothe blank contacting surface of sai support and the front faces 41 ofsaid teeth are inclined to said blank contacting surface. The undersideof the support 43 rests upon a circular portion 43 on the frame-holder34 centered upon the pivot 37 and is fastened to the frame 36 by a screw43. A gauge 44 is adjustably fastened by means of a screw 45 to theframe 36. The blank 42 is clamped against the support 43 by a primaryclamping member 46, said primary clamping mem- :ber being pivotallymounted upon a stud 47 which is surrounded by a sleeve 47 and, in orderto accommodate different sorts of heel blanks, is adjustabletransversely of the axial line of the shaft 24 in slots 48 provided inthe frame 36, said primary clamp ing member extending into a verticalslot 49 provided in the frame 36. A lever 50 constituting a secondaryclamping member is pivoted at 51 to the frame 36 and also projects intothe slot 49 in said frame 36. A screw 52 has screw-threaded engagementwith the forward end of the lever 50 and is locked in position in saidlever by means of a lock nut 53. The lower end of said screw abutsagainst the upper edge of the primary clamping lever 46 and said primaryclamping lever has a jaw 54 pivoted thereto at 55, the lower face ofsaid jaw being adapted to rest'against the upper face of the blank 42and'to automatically adjust itself to different inclinations of theupper ends of different blanks, as hereinafter more fully described. Thejaw 54 has V-shaped grooves 73 extending longitudinally thereof, thusforming V-shaped teeth 74 in the surface of said jaw. which are adaptedto engage the blank 42. A roll 56 is journalled to rotate upon the rearend of the lever 50 and its periphery is adapted to be engaged by thecam shaped end 57 of a lever 58 which is pivoted at 59 to the frame 36and extends rearwardly from said frame terminating in a handle 60 bymeans of which it may be .rocked. The distance to which said leverzsecondary clamping members are operated to clamp the blank 42 againstthe support 43. At this time the line of contact between the peripheryof the roll 56 and the cam 57 will lie substantially in a plane A Acontaining the axial line of said roll 56 and of the pivot 59.

The frame 36 is provided with a roll 63 which is journalled at its rearend upon a bearing 64 detachably fastened to the frame 36 and extendeddownwardly below the roll 63 to form a stop 65 which is adapted, whenthe arm 21 is in the Fig. 5 position, to engage a stop or projection 66fastened to a cam track 67 and thus prevent the jack from accidentallyfalling on to one of the cutters when the machine is idle. The cam track67 is pivotallymounted at 67 upon the frame of the machine and isengaged by the roll 63 when the machine is actually cutting on a blank.Both the track 29 and the track 67 may be pivotally adjusted upwardlyand downwardly about the hinge bearings 29 and 67 respectively, by meansof adjusting screws 68 and 69 respectively, which adjusting screws havescrew-threaded engagement with brackets 70 and 71 fast to the frame ofthe machine.

It is very essential, as hereinbefore set forth, that the wooden blankwhich is shaped by the cutters to make a heel, should be at all timesheld firmly in position in every direction. If it shifts its positionwhile the cutters are operating thereon longitudinally or transverselythereof, the heel will be condemned and become waste material and thesame is true if the blank tips while being formed into a heel. By makingthe teeth in the upper contacting surface of the support 43 extendtransversely of said support and the teeth in the underneath contactingsurface of the jaw 54 extend longitudinally thereof and by making theteeth of the support of the shape described and shown in Figure 7, thetwo oppositely disposed and oppositely arranged contacting surfaces ofthe support and the clamping jaw absolute- 1y prevent any shifting ofthe wooden blank longitudinally or laterally thereof while the jaw 54being pivoted conforms to the surface of the blank with which itcontacts in such a manner as to clamp the blank against its support 43so that it can not tip during the operation of the cutters thereon.

It is also very essential that different heights of heels may be clampedin the same holder and to do this diiferent jaws 54 may 7 which areformed from said blanks. P

I It will also be seen that as the underside. of the support 43 rests'onthe upper edge be provided, while the tipping of-the jaw 54 upon.itspivot 55 facilitates its fitting the upper surface of the heel blank.

It will be seen that the support 43 being fastened to the frame 36 byascrew43 different supports may be attached to said frame of differentcontours, lengths and widths and also of "different thicknesses as maybe desired to accommodate different shapes, sizes or heights of blanksand heels of the frame-holder 34, any downward thrust brought to bearupon'saidsupport 43 will be taken directly by the frame-holder 34.

The general operation of the mechanism hereinbefore specificallydescribed is as follows: A wooden blank is placed upon the support 43with the front edge of the blank corresponding to the breast of thefinished heel'abutting against the gauge 44. At this;

time the handle 60 of the lever 58 will be in its raised or dottedposition, Figure 1, and

the cam portion 57 of thelever will then be in engagement with the roll56, the clamp-. ing members 46and 50 being held upwardly at theirforward ends by a spring 7 2 which bears against the under edge of theprimary clamping member 46 and tends to lift said primary clampingmember at its forwardv sition to the full position illustrated in Figpre 1, thus causing the cam shaped end 57 I of the lever 58 to push theroll 56 upwardly and tip the lever 50 upon its pivot 51..t.hus throughthe screw 52 causing the primary clamping member 46'to force the jaw 54downwardly on the'blank 42 and clamp it I against the support 43. Atthis time the longitudinal median plane B B, Figure 10, of the holdercoincides with the longitudinal median plane A-A of the arm 21.

The operator then, by means of the handle 60, moves the holder a'ndthepartssupported thereon until the center lines AA and B-B of the arm andholder respectively assume the relative positions illustrated in Figure11 with the former 31 in engagement with the guide 32 and with one sideof the blank in engagement with the cutter 16,

the operator then turns the holder and its.

' supporting arm counter-clockwise the blank being held in engagementwith the cutter 16 until the parts arrive in the position illustrated inFigure 12. During these motions the former 31 is held against the guide32 and the frame 36 is raised and lowered by A dmeans of the shaft 24,arm 27 and track v29 and is tipped upon its pivot 37 by means of theroll 63 and cam shaped track 67 in order to produce the proper shapedcontour on one side of the heel from the breast to the middle of theback, all in a manner well-known to those skilled in this art. Theoperator having finished one side of the heel, now moves the parts tothe position illustrated in Figure 13, which is the same as the positionillustrated in Figure 10 and then moves the parts until their centerlines A-A and B-B assume the position illustrated in Fig are 14 andfinally to the position illustrated in Figure 15 thus completing theforming of the heel. The parts are then moved back to the positionillustrated in Figure 10 and the lever 58 is thrown into the positionillustrated in dotted lines Figure 1 thus releasing the formed heelblock and allowing it to be the holder.

' I claim:

1. A blank holder for heel turning machines having, in combination, asupport for a blank comprising a frame, a frame-holder upon which saidframe is pivoted, a vertical shaft constituting a pivot for saidframeholder, a stud adjustably mounted in said frame, a. primaryclamping member pivoted on said stud, a lever constitutingasecondaryclamping member pivoted on said frame and adapted to cooperate with saidprimary clamping member to cause it to engage said blank and clamp it tosaid support and means to lock said secondary clamping member inposition with said primary clamping member forcing said blank againstsaid sup- .port. Y

2. A blank holder for heel turning machines having, in combination, asupport for a blank comprising a frame, a ,frame holder removed by 'theoperator or to drop from upon which said frame is pivoted, a primaryagainst said blank, and a cam lever pivoted to said frame and adapted tocome into engagement withthe rear end of said lever whereby said primaryand secondary clamping members maybe locked in position with said blankclamped against said support.

3. A blank holder for heel turning ma- I chines having, in combination,a support for ablank comprising a frame, a frame holder upon which saidframe is pivoted, a primary clamping member pivoted: to said frame, alever constituting a secondary clamping member pivoted to said frame,the forward 'end of said lever being adapted to engage said primaryclamping member to force it againstsaid blank, a roll rotatably mountedupon the rear end of said lever and a cam lever pivoted to said frameand adapted to engage said roll, the line of contact to said cam leverand roll lying substantially in a plane extendin through the axiallines'of said roll and of the pivot of said cam lever,

when said primary clamping member. is. positioned to force said blankagainstsa d chines having, in combinatioma support for a blankcomprising a frame rovided with a slot, a frame-holder upon which saidframe is pivoted, a primary clamping member located in said slot pivotedto said. frame and adapted to engage said blank, a lever constituting asecondary clamping member also projecting into said slot and adapted toengage said primary clamping member to force it against said blank, andmeans to 100k Said clamping members in position with. said blank clampedagainst said support.

5. A heel turning machine having, in combination, a support for a blankcomprising a frame, a frame holder upon which said frame is pivoted, ashaft to which said frame holder is fastened, a primary clamping memberpivoted to said frame and adapted to engage said blank, a leverconstituting a secondary clamping member pivoted to said frame andadapted to engage said primary clamping member, means to lock saidprimary and secondary clamping members in position with said blankclamped against said support, a roll journaled upon said frame andextending transversely of said shaft, and a cam shaped track upon whichsaid roll is adapted to travel whereby a rocking motion may be impartedto said frame.

6. A heel turning machine having, in combination, a support for a blankcomprising a frame, a. frame-holder upon which said frame is pivoted, avertical rock-shaft to which said frame-holder is fastened, a primaryclamping member pivoted to said frame and ada ted to engage said blank,a lever constituting a secondary clamping member pivoted to said frameand adapted to engage said primary clamping member, means to lock saidprimary and secondary clamping members in position with said blankclamped against said support, a roll journaled upon said frameand'extending transversely of said rock-shaft, a cam shaped track uponwhich said roll is adapted to travel whereby a rocking motion may beimparted to said frame, an arm fastened to said rock-shaft, a rolljournaled upon said arm and extending transversely of said rockshaft,and a second cam shaped track adapted to be engaged by said lastmentioned roll whereby a vertical movement may be imparted to said blankholder.

7. A heel turning machine having, in combination, a support for a blankcomprising a frame, a frame-holder upon which said frame is pivoted, aprimary clamping member pivoted to said frame and adapted to engage saidblank, a lever constituting a secondary clamping member pivoted tosaidframe and "adapted'ito je'iigage "said primary clamping -membegsn anstolock said primary and secondary-clamping members 3 in positionsupport. a

4. A blank holder for'heel. turnin'g.- .ma-

with said blank clamped against said support, a? roll journaled uponsaid frame, a

bearin' for the outer end of said roll'detachably astened to said frame,and a cam shaped track upon which said roll is adapted to travel.

I 8. A heel turning machine having, in combination, a support for ablank comprising a frame, aframe-holder upon which said frame is ivoted,a vertical rock-shaft to which said frame-holder is fastened, a primaryclamping member pivoted to said frame and adapted to engage said blank,a lever constituting a secondary clampin member pivoted to said frameand adapted to engage said primary clamping member, means to lock saidprimary and secondary clamping members in position with said blankclamped against said support, a roll pivoted, a vertical shaft fast tosaid frameholder, a form fast to said frame-holder, a.

guide cooperating with the form, an arm upon which said shaft isjournaled, a second vertical shaft upon which the other end of said armis mounted, and around the axis of which the arm rotates, a primaryclamping member pivoted to said frame, a lever constituting a secondaryclamping member pivoted to said frame and adapted to engage said primaryclamping member to cause the same to clamp said blankagainst saidsupport, means to lock said clamping members in position with said blankclamped against said sup-port, means to rock said frame upon saidframe-holder, and means to raise and lower said shaft to which saidframe-holder is fastened.

10. A heel turning machine having, in combination, a support for a blankcomprising a frame, a frame-holder having an arcu ate surface upon whichsaid frame rests and about the center of which it; is pivoted, avertical shaft fast to said frame-holder, aform fast to saidframe-holder, a guide 00- operating with the form, an arm upon whichsaid shaft is journaled, a second vertical shaft upon which the otherend of said arm is ve I pivoted to said frame and adapted to engage saidprimary clamping member to causethe same to clamp said blank againstsaid support, and means to lock said clamping members in position withsaid blank clamped against said support.

11. A heel turning machine" having, in combination, a support for ablank comprising a frame, a frame-holder provided with a slot, saidframe being pivoted to said frame holder and projecting through saidslot, means mounted upon said frame adapted to clamp a blank to saidsupport, means to rock said frame on said frame-holder, and a studextending transversely of said frame and of said frame-holder andadapted to take up the wear of said frame in said slot.

12. A blank holder for wood heel turning machines having, incombination, a support for the blank, a primary clamping member arrangedto cooperate with the support to hold a blank, a secondary clampingmember arranged to adjustably engage the primary clamping member toforce it against the blank, and a cam lever arranged to engage thesecondary clamping member to force it against the primary clampinmember.

In testimony whereof I have hereunto set x m JOHN H. VIQNTON.

